Grain-door valve.



"PATENTED FEB. 5, 1907.

H. C. OSTERMANN. GRAIN DOOR VALVE. APPLICATION FILED APR. 28,1906.

THE NORRIS PETERS 20., WASHiNDTDN, 1:. c

U ITED STATES PALIENT OFFICE.

HENRY c. OSTERMANN, or oI'IIoA'eo,IL INoIsAssIeNoR Torr-IE OSTER- MANNMANUFACTURING 00., or oIIIcAeo, ILLINOIS, AcoRroRAT o oF SOUTH DAKOTA.

T at whmn it may concern.-

Beit known thatI, HENRY C. OSTERMANN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illi- 1101s,have invented certain new and useful Improvements in Grain Door Valves,of which the following is a specification.

My invention relates to the valves used in grain-doors for railway-cars,and its salient features are the ease with which the grain may bedischarged through a port-opening in the door, the simplicity of thevalve, the means for preventing a leakage of grain through the valvewhen in closed position, and its economy of manufacture.

In the accompanying drawlngs I have illustrated the preferred embodimentof my inin the direction indicated by the arrows.

Fig. is a face view of the two plates constituting the valve, and Fig. 6is a lower edge view of the two plates shown inFig. 5.

Referring to Fig. 1, the car 10 is equipped with a grain-door 11,pivoted at the point 12 and adapted to be swung on its pivot in a planeparallel to the side of the car away from the doorway 13. Thisgrain-door has a sector-opening 14 near its lower edge, and in order toopen and close this port-opening I provide at the point 15 twosector-plates 16 and 17, each ofwhich is equipped with anoperating-handle 18, as illustrated in Figs. 1 and 2. The edge of plate16 adjacent to the plate 17 has a comparatively long inner flange 19 onits inner surface and a much shorter flange 20 on its outer surface,while the edge of plate 17 has a flange 21 on its outer surface and aflange 22 on its inner surface. When the plates 16 and 17 are pushed orallowed to come together, as illustrated in Figs. 1 and 2, flange 21overlaps 19 and the flange 20 overlies flange 22. This construc tionforms a sort of seal, which prevents any leakage of grain between thetwo plates. In order to prevent the grain from pressing theSpecification of Letters'Patent. 7

Application filed April 28, 1906 Serial No. 314.189.

GRAIN-DOOR vALvE.

Patented Feb. 5, 1907.

valve-plates outwardly from the grain-door, I mount on its outer surfaceanarc-shaped plate 23, provided with a flange 24, which is adapted tooverlapthe lower curved edges of the sector-plates 16 and 17 By thisconstruction the valve-plates are effectually prevented from beingdisplaced. Each plate 16 and 17 has a ring or staple 25,'with whichanother staple or hook 26 coacts to lock the two plates in closedposition and to prevent their being jarred apart while the car is intransit.

The operation of the device is as follows: When it is desired to permitthe grain to pour through the portopening 14 and be dis charged from thecar, the hook or staple 26 is raised, thereby unlocking the valve-plates16 and 17 one from the other, and then by means of the handles 18 one orboth of the plates may be-turned 011 its pivot 15, so as to open theport in the door a greater or less amount, as desired. To close theport, it is merely necessary to permit the two plates to again cometogether, at which time they may be fastened or locked together. It willbe apparent that it is much easier to move-one of.

the plates 17 with the grain pressing thereagainst than it would be toshift a single plate covering the entire port-opening. The pressure ofgrain against a valve of this character is considerable, and it is tofacilitate the opening of such a valve that I have divided the plateconstituting the port-opening into two parts.

Minor mechanical changes may be made in the construction shown anddescribed herein without departing from the substance of my invention asset forth in the appended claims.

Cross-reference is made herein to the following copending applications,which claim some of the features shown in but not claimed in thisapplication, No. 260,560,

filed May 15, 1905; 271,448, filed July 27,

port-opening, a pair of sector-plates eoncen trically pivoted on saiddoor and adapted to close said opening, the meeting edge of each platehaving a portion adapted to lie in front of a part of the other plate,substantially as described.

3. In a device of the character described, the combination of agrain-door having a port-opening, a pair of sector-plates concentricallypivoted on said door and adapted to close said opening, the meeting edgeof each plate having a front and a back flange, the front flange of eachplate being adapted to overlie the back flange of the other plate whenboth of'said plates are in closed position, substantially as described.

4. In a device of the character described,

HENRY C. OSTERMANN.

scribed.

Witnesses:

WALTER M. FULLER, L. F. MGCREA.

